Free online trigonometry calculator. Compute sin, cos, tan, csc, sec, and cot values. Supports both degrees and radians. Pure frontend math tool.
How to Use
- Enter Your Angle
Enter an angle value. Choose between degrees and radians mode depending on your needs. - Calculate
Click Calculate to instantly compute all six trigonometric functions for the given angle. - Read the Results
All six trig values (sin, cos, tan, csc, sec, cot) are displayed in a clear grid for easy reference.
FAQ
What are the six trigonometric functions?
Sine (sin), Cosine (cos), Tangent (tan), Cosecant (csc=1/sin), Secant (sec=1/cos), and Cotangent (cot=1/tan). They relate angles to side ratios in right triangles.
What is the difference between degrees and radians?
Degrees divide a circle into 360 parts. Radians use the arc length, where 2π radians = 360° (a full circle). π radians = 180°.
When is tan undefined?
Tan is undefined when cos = 0, i.e., at 90° (π/2) and 270° (3π/2) in standard orientation. Similarly, csc and sec have points where they're undefined.
What is the unit circle?
The unit circle is a circle of radius 1 centered at the origin. Any angle's trig values can be read directly from its intersection point with the circle.
Where is trigonometry used?
Trigonometry is used in: navigation, engineering, physics (waves, oscillations), computer graphics (rotation, 3D rendering), astronomy, and architecture.